Arlie, also check to see that the jack is not binding on the let off rail. If it is is there too much key travel so add a punching. Or loosen the nearest screw and move the rail towards you just a tad. Joe Goss BSMusEd MMusEd RPT imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "Paul McCloud" <pmc033 at earthlink.net> To: <pianotech at ptg.org> Sent: Wednesday, July 06, 2011 8:21 AM Subject: Re: [pianotech] Rebel action > Hi, Arlie: > You might look at the butt leather and see if it's come loose. I'm not > sure what you mean by "rebound against the rest rail". I assume that the > jack isn't resetting and so the key doesn't repeat. Somehow, that jack > isn't going back under the hammer butt, even though you have a new spring > installed and the jack is free. Right? You've got a little lost motion, > so the jack can get back under? The bridle tape is not interfering with > the jack? There is nothing that fell into the action, like a screw or > something that prevents the jack from returning? The wippen flange is > free > and not sticky? Key is free, and the grommet on the lifter wire isn't > binding? These spinets are hard to service because you can't see things > easily. One thing that causes sticking keys on Wurlitzer spinets is that > the wippen heel felt has become crushed by the capstan, so it has a lot of > friction. The keys become sluggish ( and won't repeat). Cure is to > replace the felt on the wippen. I would bet you have some sluggish keys > too, no? If so, look at the other parts which lead up to the jack, > starting with the key, grommets, wippen flanges, lost motion, etc. > Something is amiss, and you'll find it. > Good luck. > Paul McCloud > San Diego > > >> [Original Message] >> From: Arlie Rauch <adarpub at midrivers.com> >> To: <pianotech at ptg.org> >> Date: 07/06/2011 6:49:25 AM >> Subject: [pianotech] Rebel action >> >> Yesterday I serviced a Wurlitzer console. The customer complained about > one key (2nd Eb above middle C) not working. The problem was that the > jack > would get stuck when the hammer returned. >> >> I tried various regulation changes (regulation button, back check, bridle > wire, etc.). The capstan was proper. When its action appeared to be > regulated exactly as those around it, the hammer would rebound against the > rest rail. The only way I could get it to behave somewhat properly was to > move the back check about a quarter inch further forward than all the > other > back checks. Then it would not get stuck, but repetition suffered some. >> >> I even replaced the jack spring, thinking that was weak, but it made no > difference. >> >> What have I possibly missed here? >> >> Arlie Rauch > > > >
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